Very true. I learned this the hard way when I still traded stocks. If you are nervous the whole day and stare at tickers and graphs, afraid to miss a chance to buy or sell, you're not a happy camper.

I mean ; I'm very tempted to take every single cent I have right now and buy coins with them, but there's always the chance that the whole bitcoin economy comes tumbling down, for example. Or maybe MtGox goes broke and take with it half of the total bitcoins. Scary things like that are possible.

Only buy coins with money that you wouldn't care to much about if it went " poof ". That's also why I never tell people they SHOULD buy PXC , BTC, gold, whatever. I don't want that responsibility